Geneva, Switzerland, June 30, 2025 -- STMicroelectronics’ new VIPer11B off-line high-voltage converters make tiny, efficient, and low-cost power supplies for applications up to 8W, including lighting, smart-home equipment, appliances, and smart meters.

ST’s VIPer11B converters cut the bill of materials through extensive feature integration to simplify circuit design and save external components. The 800V avalanche-rugged MOSFET requires only small snubbing components and a built-in senseFET provides almost lossless current sensing with no additional resistors. High-voltage startup circuitry is on-chip, requiring only an external capacitor for the Vcc supply, and the frequency-jittered oscillator minimizes any external filtering needed to meet electromagnetic compatibility (EMC) regulations.

Also, being housed in a compact SSOP10 package, the converters deliver power where space is tight. This can be especially valuable in applications that are subject to rigidly defined form factors, such as LED-lighting drivers and smart bulbs. The converters also help meet stringent ecodesign regulations, with low standby current that cuts no-load power consumption to less than 10mW and pulse-skipping operation to boost light-load efficiency.

Flexibility is another strength, with a wide Vcc range that permits supplying the converter from a transformer auxiliary winding or from the output in a non-isolated topology. The VIPer11B can be used in non-isolated flyback, buck, and buck/boost topologies and isolated flyback with primary-side or secondary-side regulation. 

Featuring output overload and overvoltage protection with automatic restart, Vcc clamping, thermal shutdown, and soft-start, VIPer11B converters help designers build strong and reliable power supplies. Two variants are available, letting designers select the VIPer113B with drain-current protection threshold of 370mA or the VIPer114B that has a current limit of 480mA.

The VIPer11B converters are in production now, priced from $0.56 for orders of 1000 pieces.

Please visit https://www.st.com/viper11b for more information.

About STMicroelectronics 

At ST, we are 50,000 creators and makers of semiconductor technologies mastering the semiconductor supply chain with state-of-the-art manufacturing facilities. An integrated device manufacturer, we work with more than 200,000 customers and thousands of partners to design and build products, solutions, and ecosystems that address their challenges and opportunities, and the need to support a more sustainable world. Our technologies enable smarter mobility, more efficient power and energy management, and the wide-scale deployment of cloud-connected autonomous things. We are on track to be carbon neutral in all direct and indirect emissions (scopes 1 and 2), product transportation, business travel, and employee commuting emissions (our scope 3 focus), and to achieve our 100% renewable electricity sourcing goal by the end of 2027. Further information can be found at www.st.com.